Demographical and clinical features of rheumatoid arthritis (RA) and ankylosing spondylitis (AS) patients at baseline and one year drug survival data
| RA (n=386) | AS (n=403) | P value | |
|---|---|---|---|
| Age (years) | 49 (38–58) | 39 (30–46) | <0.00001 |
| Female (%) | 73.1 | 41.7 | >0.05 |
| Disease duration (years) | 7 (3–13) | 7 (3–13) | 0.09 |
| Diagnosis duration | 4 (2–10) | 2 (0.75–6) | <0.00001 |
| Biological duration (months) | 9 (5–13) | 10 (5–13) | >0.05 |
| Number of biologic drugs used | 1 | 1 | >0.05 |
| Prior DMARD use (%) | 82.4 | 73.9 | 0.005 |
| Number of DMARD use | 4 (2–6) | 2 (1–3) | <0.00001 |
| DMARD use at last visit (%) | 67.4 | 21.6 | <0.00001 |
| 1-year drug retention rate of TNFi (%) | 60.7 | 78.3 | 0.0007 |
Continuous data are given as median with interquartile ranges.